CVE-2026-68395

Denial of service via premature interrupt enablement

Published Aug 10, 2026 · Updated Aug 10, 2026

Denial of service in the Linux sata_dwc_460ex driver allows local users to destabilize affected PowerPC systems during probe. The probe path calls sata_dwc_enable_interrupts() before platform_get_irq() and ata_host_activate(), unmasking interrupts before a handler exists. Exposure requires an AppliedMicro SATA DWC controller with sata_dwc_460ex present; a premature interrupt or later setup failure can trigger an interrupt storm and service interruption.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux sata_dwc_460ex driver allows local users to destabilize affected PowerPC systems during probe. The probe path calls sata_dwc_enable_interrupts() before platform_get_irq() and ata_host_activate(), unmasking interrupts before a handler exists. Exposure requires an AppliedMicro SATA DWC controller with sata_dwc_460ex present; a premature interrupt or later setup failure can trigger an interrupt storm and service interruption.

The record

CVE
CVE-2026-68395
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-431, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.6.36
  2. Affected versionversion=62936009f35a6659cc3ebe0d90c754182d60da73 <23d4c50fdc0dfe3ad4f9647a3b7d486de807dcda
  3. Affected versionversion=62936009f35a6659cc3ebe0d90c754182d60da73 <4bbc16a353a98023e5ddfca7c1fc0e49971cf4d0
  4. Affected versionversion=62936009f35a6659cc3ebe0d90c754182d60da73 <5d0797d6940b8dc894f950c52f7af0b42cb55ed0
  5. Affected versionversion=62936009f35a6659cc3ebe0d90c754182d60da73 <daa80b422ed920a3c0c45153020b0ad7af7fb5a5
  6. Affected versionversion=62936009f35a6659cc3ebe0d90c754182d60da73 <fbe7df5d3a3aed2456667a4825e4ff98d6df6ca4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.36; version=62936009f35a6659cc3ebe0d90c754182d60da73 <23d4c50fdc0dfe3ad4f9647a3b7d486de807dcda; version=62936009f35a6659cc3ebe0d90c754182d60da73 <4bbc16a353a98023e5ddfca7c1fc0e49971cf4d0; version=62936009f35a6659cc3ebe0d90c754182d60da73 <5d0797d6940b8dc894f950c52f7af0b42cb55ed0; version=62936009f35a6659cc3ebe0d90c754182d60da73 <daa80b422ed920a3c0c45153020b0ad7af7fb5a5; version=62936009f35a6659cc3ebe0d90c754182d60da73 <fbe7df5d3a3aed2456667a4825e4ff98d6df6ca4

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-431Missing Handler
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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